Abstract:
An optical disk of the present invention includes a first substrate having a signal area on a principal plane and a central hole, and a second substrate that is transparent and attached to the first substrate. The second substrate is thinner than the first substrate, and has a central hole whose diameter is larger than that of the first substrate. The first substrate and the second substrate are attached to each other with radiation curable resin (adhesive member) disposed therebetween so as to extend at least from an inner peripheral edge of the second substrate to an outer peripheral edge thereof.
Abstract:
Disclosed herein are a sheet-like probe that permits forming a front-surface electrode part small in diameter and surely achieving a stable electrically connected state even to a circuit device, on which electrodes have been formed at a small pitch, and prevents the electrode structures from falling off from an insulating film to achieve high durability, and a production process and applications thereof. The sheet-like probe of the invention has a contact film obtained by arranging, in a flexible insulating film, a plurality of electrode structures extending through in a thickness-wise direction of the insulating film in a state separated from one another in a plane direction of the insulating film, wherein each of the electrode structures is exposed to the surfaces of the insulating film and composed of a front-surface electrode part projected from a front surface of the insulating film, a back-surface electrode part exposed to a back surface of the insulating film, a short circuit part directly joined to the front-surface electrode part and the back-surface electrode part for electrically connecting them and extending in a thickness-wise direction of the insulating film, and a holding part formed at a proximal end portion of the front-surface electrode part and extending in the plane direction of the insulating film, and at least a part of the holding part is embedded in the insulating film.
Abstract:
An anisotropically conductive connector, by which positioning, and holding and fixing to a wafer to be inspected can be conducted with ease even when the wafer has a large area, contains a frame plate having a plurality of anisotropically conductive film-arranging holes formed corresponding to regions of electrodes to be inspected of a wafer, and a plurality of elastic anisotropically conductive films arranged in the respective anisotropically conductive film-arranging holes and supported by the inner peripheral edge thereabout.
Abstract:
An anisotropically conductive connector, and applications thereof, by which good conductivity is retained over a long period of time even when it is used in electrical inspection of a plurality of integrated circuits formed on a wafer repeatedly over a great number of times, and thus high durability and long service life are achieved. The anisotropically conductive connector includes elastic anisotropically conductive films, in each of which a plurality of conductive parts for connection containing conductive particles and extending in a thickness-wise direction of the film are formed. The conductive particles contained in the conductive parts for connection in the anisotropically conductive connector are obtained by laminating surfaces of core particles exhibiting magnetism with a coating layer formed of a high-conductive metal, and the coating layer is a coating layer having a high hardness.
Abstract:
An anisotropically conductive connector having a frame plate, in which a plurality of openings have been formed in accordance with a pattern corresponding to electrodes to be connected, and an elastic anisotropically conductive film composed of a plurality of functional parts arranged in the respective openings of the frame plate. The conductive film is composed of a conductive part for connection extending in a thickness-wise direction of the film and an insulating part formed integrally with the conductive part. Conductive parts for high-frequency shielding are arranged to surround each of the conductive parts for connection, electrically connected to the frame plate and extending in the thickness-wise direction, and are formed in the part to be supported in the elastic anisotropically conductive film. The frame plate is connected to a ground.
Abstract:
When displaying moving images by using liquid crystal panels and others, a problem exists in that tail streaks occur, and image degradation is resultantly caused. To solve this problem, an echo suppression circuit divides a video signal into a pair composed of two successive frames for comparison between these two frames in signal level for the purpose of suppressing an echo phenomenon occurring when a liquid crystal panel displays video signals including moving images. If these two frames are not the same in signal level, the signal is accordingly corrected so as to equalize the signal level of these frames. Based on the video signals and others corrected by the echo suppression circuit, a controller operates the liquid crystal panel with AC drive through a source driver and a gate driver. As such, the drive voltage used to operate the liquid crystal panel with AC drive is adjusted so as to be balanced between positive and negative. In this manner, the tail streaks are prevented when displaying moving images.
Abstract:
A die for molding a disk substrate capable of forming fine recessed and projected pits and grooves up to the outer periphery of the disk substrate by preventing low heat conductive elements from peeling off and burrs from occurring on the outer periphery thereof, comprising a first base die, a second base die disposed oppositely to the first base die, a first low heat conductive element fixed to the first base die, a stamper fixed onto the first low heat conductive element, a second low heat conductive element fixed onto the second base die, and a ring-like regulating member fitted to and in slidable contact with either of the first and second low heat conductive elements. The die is characterized in that the end part of the ring-shaped regulating member is positioned within the range of the outer peripheral side face of the low heat conductive element in slidable contact therewith.
Abstract:
Disclosed herein are a wafer inspection apparatus, which is small in size, is prevented from shortening the service life of its circuit board for inspection, capable of collectively performing inspection as to a great number of electrodes to be inspected, has good electrical properties and capable of performing electrical inspection of high functional integrated circuits, and an anisotropically conductive connector suitable for use in this wafer inspection apparatus. The anisotropically conductive connector of the invention comprises an elastic anisotropically conductive film composed of a plurality of conductive parts for connection each extending in a thickness-wise direction of the film and arranged in a state separated from each other and an insulating part formed among these conductive parts for connection, and a frame plate for supporting this film. The frame plate is formed of a metallic material having a coefficient of linear thermal expansion of 3×10−6 to 2×10−5 K−1, the conductive parts for connection are obtained by filling conductive particles having a number average particle diameter of 20 to 80 μm and exhibiting magnetism in an elastic polymeric substance at a high density, the conductive particles have, on a surface of which, a coating layer composed of a noble metal and having a thickness of at least 20 nm, each of the conductive parts for connection has a durometer hardness of 10 to 35, and an electric resistance between the conductive parts for connection is at least 10 MΩ.
Abstract:
An activation energy ray-sensitive composition permitting development with neutral water. Provided is an activation energy ray-sensitive composition characterized by comprising a dispersion which comprises an aqueous solution of a water-soluble resin, and an acid former dispersed in the aqueous solution in the form of fine powder, the acid former being insoluble or sparingly soluble in water and generating an acid by the action of activation energy rays, and an acid-reactive insolubilizing agent dissolved or dispersed in the dispersion and insolubilizing the water-soluble resin by the action of the acid.
Abstract:
A liquid crystal display comprises an array substrate in which a common electrode, a pixel electrode, a scanning signal line, a video signal line and a semiconductor switching element are provided, an opposed substrate, and a liquid crystal layer interposed between the array substrate and opposed substrate. The line width of at least either the common electrode or the pixel electrode is larger than the distance between the common electrode and the pixel electrode. The film thickness of at least one of the common electrode and the pixel electrode is larger than the thickness of at least either the scanning signal line or the video signal line. As a result, an inplane electric field liquid crystal display having a wide viewing angle, high-speed response, and high image quality such as high luminance is provided.